Finding the Fourth Proportional to 45,162.48, 67,729.36 and 42,214.12

Step by Step Solution

1. Step 1: Write the proportion equation
   45,162.48 : 67,729.36 = 42,214.12 : x
2. Step 2: Convert to fraction form
   45,162.48/67,729.36 = 42,214.12/x
3. Step 3: Cross multiply
   45,162.48x = 67,729.36 × 42,214.12
4. Step 4: Simplify right side
   45,162.48x = 2,859,135,499.89
5. Step 5: Solve for x
   x = 2,859,135,499.89/45,162.48
6. Step 6: Final answer
   x = 63,307.76